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TPS2052B: TPS2052B output current issue

Intellectual 470 points

Replies: 4

Views: 133

Part Number: TPS2052B

Hi,

I have given enough power to My USB hub usb2514B so that en1 to en4 is logic high and tps2052B got active so that I can get vout1 to vout4 5V, 500 mA.

I have used 2 tps2052b but when I checked max output current capabilities using 1E, 5W fusible resistor it only shows 220mA max current .

I am also using wifi dongle which need more than 300 mA current so sometime it work and sometimes not. So I got confused what to do ? Secondly when I using wifi dongle and other board on different tps2052b then it works well but when using on 2 different channel of same chip then it create issue that nothing goes power up.

Let me know how to check it's output continuous current .

Thanks,

Irfan

  • Hi Irfan,

    I am not clear with your description as following. You can get 500mA output current by hub. Why only get 220mA max current.

    I am not clear about the method you check the max output current.

    You'd better upload the related schnematic for better understanding.

    Thanks.

  • In reply to Ziv Zhang:

    PRO101-004A-R001-2.pdf

    Hi Zhang,

    Please find the attached schematic and let me know your suggestions to get continuous 500 mA output current .

    Thanks

    Irfan

  • In reply to Mahammadirfan Saiyed:

    Hi Irfan,

    Sorry for the late reply.
    Do you have the waveforms of the output current and the waveforms of OC?
    Because the part current limit @1.5A, I think maybe your power supply setting maybe something wrong or your E-load.
    You can remove one TPS2052B and also can remove the hub IC, just power up one TPS2052 to test the output current.

    If any other, contact me any time.
    Or you can leave your email to me, I will call you.
    Sorry for the late reply.

    If you think this resolve your issue, please click 'Issue is resolved button'.
    Thanks.
  • In reply to Ziv Zhang:

    Hi Irfan,
    Issue is resolved or not?
    I will close the question first. If you still have any concern, contact me any time.
    Thanks.

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